Screw-nut



(No Model.)

H. G. IBBGTSON,

SCREW NUT.

No, 323,422. I Patented Aug, 4, 1885.

Fay. Z;

Pay. 3.

a a d i a A Wirin e s s e s Invenior T0 (1,1 5 whom, it may (inn/earn.-

Be it lmewvn that BOTSON, :1, suhj eat of the a nd ilelzlllihilllilizIY'SKEQD'LO!330M011 {:lhlSGiL) 5 of the enemy efsm'mlk, of she Cennnonwealth of h use! nel'eh q led-ere the followizngspeiflee ueeempzmying (1?. V Figure 1 is an end View; wiilimn :ml'l Fig 5;a serew-nut sf my lnventimn lhe nature c-fwhieh is defined. in the eleimlxere'lneiller presensen.

Suehinveniion is for the-pm; venting lhe nut heel; er inengagementtheyewlbh eenslsis in s serewnut Cress eat all one em so as nome e:- I of its here at such end (av out an seyewlhreznl, 01- .l lhet of{he spiral or screwgroeve extending i'hrenghenb here,

ve-t

0 {11C snhl screw or serew-helt on be 152; fer-seal into the din; of the1m? slmll, by acting agains- K- .-Y. I

n3 nu... 11ml M10160) cause 1L 0 ieily Le hind. Eli-ml t0 lhesez'ew erserewnut, prisnn serxes 01" cross-cuts, a, termed in it hem one e116.wwnrcl but 1101: extending to its ether end.

ll lm in'evennms in deren h lnls; and T. do

IJDW ARI) ACHU SE1" SPECIPHZ'ATIDN f0 min? mart 0ft Letters Patens We3:22 laLe-fi A1. 11st .1- 1885.

Application filed June 23, L854 (N0 model.)

s )i'sng ea why in directions radial be the axis 5; e nut. The nuthaving been bored fer being eppetl is next to have the here at and nearits end in which the cross-ems are made em; ujflindllGllly LO 3diam-meter :1 little in an that of the spiral or screw groove of thenet. This greovs is shown at Z in Fig. 3, extends from ene ens 0f thenut to a shorl; distance from the opposite or cross-ant end thereeilfrom Whieh it will be seen that, as represestei she parties 6 of thehere next the caress-eel; end e? sueh here is without any spi-. mlgreeve m engage with the spiral thread of a serewheli when the subway bescrewed thereupee 0n the serew 0% the bolt; attainmg that nus of thegroove which is next the ems st enfi of the nut, sue-h screw, as the nutmay advanced upon it, will be forced hm the c 011 liminished portion ofthe bore of e nut, an in se eloing will expand the sub 0;: sense it togive Way, and s0 firmly grasp be screw as to be prevented fromaccidentally enserewing.

I am a thet nut been made having part its base smaller than the other,and hssheen previeed with slits at such smaller he's such parties hasbeen threaded. lung such perctien plain or unthreaded li beuncl wishes?)jamming the threads I, EDWARD CPLXRLES 11;-

Queen of Great Britain nsseehnsells, have invented s. new and less mm tohe described in the on, and yepresenlzed in the mug 01" which 1.1 shleeleof z transverse 'l-iveetim'a e fax" prefrom accidentally turningunscrewing l'renl 2', es: or hols when and such invention t-ensihleradially,

shell ersnlsller pert 01 Lhe bore X l expand its inherent I claim is--The n; saving ihe threaded groove 7), the nzzmreznled portion 0 of aless liameter then the greeve b, and the slits a, the last exenly thelength 0f the portion 0, as

sud drawings, A. denotes a serew tie in shape and previzleai with a Asrepreseulell, each 0i the cross-cuts goes lARLES EBBOTSON. HH'O .311 thenut l ansverse'ely and tlwongh its

